Lenovo E41-55 Hardware Maintenance Manual
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Lenovo E41-55 Hardware Maintenance Manual

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Lenovo E41-55
Hardware Maintenance Manual

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Summary of Contents for Lenovo E41-55

  • Page 1 Lenovo E41-55 Hardware Maintenance Manual...
  • Page 2 Third Edition (February 2023) © Copyright Lenovo 2020, 20223.

  • Page 3: Table Of Contents

    Major FRUs and CRUs ... . Remove the LCD cover ..Trademarks ....lv © Copyright Lenovo 2020, 20223...
  • Page 4 Lenovo E41-55 Hardware Maintenance Manual...

  • Page 5: About This Manual

    About this manual ® This manual contains service and reference information for the following Lenovo products. Product name Machine type (MT) Lenovo E41–55 82FJ, 82FK*, 83C1 and 83C2* * for mainland China Use this manual along with the advanced diagnostic tests to troubleshoot problems.
  • Page 6 Lenovo E41-55 Hardware Maintenance Manual...

  • Page 7: Chapter 1. Safety Information

    • Do not work alone under hazardous conditions or near equipment that has hazardous voltages. • Disconnect all power before: – Performing a mechanical inspection – Working near power supplies © Copyright Lenovo 2020, 20223...

  • Page 8: Safety Inspection Guide

    This guide addresses only those items. You should use good judgment to identify potential safety hazards due to attachment of non-Lenovo features or options not covered by this inspection guide.

  • Page 9: Handling Devices That Are Sensitive To Electrostatic Discharge

    4. Check for cracked or bulging batteries. 5. Remove the cover. 6. Check for any obvious non-Lenovo alterations. Use good judgment as to the safety of any non-Lenovo alterations. 7. Check inside the unit for any obvious unsafe conditions, such as metal filings, contamination, water or other liquids, or signs of fire or smoke damage.

  • Page 10: Grounding Requirements

    The safety notices in this section are provided in the following languages: • English • Arabic • Brazilian Portuguese • French • German • Hebrew • Japanese • Korean • Spanish • Traditional Chinese DANGER DANGER DANGER Lenovo E41-55 Hardware Maintenance Manual...
  • Page 11 DANGER DANGER DANGER DANGER DANGER Chapter 1 Safety information...
  • Page 12 Lenovo E41-55 Hardware Maintenance Manual...
  • Page 13 PERIGO PERIGO PERIGO PERIGO PERIGO Chapter 1 Safety information...
  • Page 14 PERIGO PERIGO PERIGO DANGER DANGER DANGER Lenovo E41-55 Hardware Maintenance Manual...
  • Page 15 DANGER DANGER DANGER DANGER DANGER VORSICHT Chapter 1 Safety information...
  • Page 16 VORSICHT VORSICHT VORSICHT VORSICHT VORSICHT Lenovo E41-55 Hardware Maintenance Manual...
  • Page 17 VORSICHT VORSICHT Chapter 1 Safety information...
  • Page 18 Lenovo E41-55 Hardware Maintenance Manual...
  • Page 19 Chapter 1 Safety information...
  • Page 20 Lenovo E41-55 Hardware Maintenance Manual...
  • Page 21 Chapter 1 Safety information...
  • Page 22 Lenovo E41-55 Hardware Maintenance Manual...
  • Page 23 Chapter 1 Safety information...
  • Page 24 Lenovo E41-55 Hardware Maintenance Manual...

  • Page 25: Chapter 2. General Checkout

    Before checking problems with the computer, determine whether the damage is covered under the warranty by referring to the following list: The following are not covered under warranty: • LCD panel cracked from the application of excessive force or from being dropped • Scratched (cosmetic) parts © Copyright Lenovo 2020, 20223...

  • Page 26: Checking The Ac Power Adapter

    To check the USB-C type ac power adapter, do the following: 1. Connect the computer to a power outlet and turn on the computer. 2. Start Lenovo Vantage program, and locate the Power section. The ac power adapter information is displayed.
  • Page 27 Checking the operational charging To check whether the battery charges properly during operation, do the following: 1. Discharge the battery until the remained battery power is less than 50%. 2. Perform operational charging. Click the battery status icon in the Windows notification area to display detailed battery information.
  • Page 28 Lenovo E41-55 Hardware Maintenance Manual...

  • Page 29: Chapter 3. Locating Computer Controls, Connectors, And Indicators

    Chapter 3. Locating computer controls, connectors, and indicators This topic introduces the locations of the computer controls, connectors, and indicators. Front Item Item 1. Microphone 2. Camera 3. SD card slot* * for selected models © Copyright Lenovo 2020, 20223...

  • Page 30: Base

    Base Item Item 1. Fingerprint reader* 2. Touchpad with buttons 3. Power button * for selected models Lenovo E41-55 Hardware Maintenance Manual...

  • Page 31: Left

    Left Item Item 1. Power connector 2. Ethernet connector 3. HDMI™ connector 4. USB-A 3.2 Gen 1 connector ® 5. USB-A 2.0 connector 6. USB-C (3.2 Gen 1) connector 7. Audio connector Chapter 3 Locating computer controls, connectors, and indicators...

  • Page 32: Right

    Right 1. Mini security-lock slot Lenovo E41-55 Hardware Maintenance Manual...

  • Page 33: Chapter 4. Fru Replacement Notices

    CRU to you. CRU information and replacement instructions are shipped with your product and are available from Lenovo at any time upon request. You can find a list of CRUs for your product in this Hardware Maintenance Manual. An electronic version of this manual can be found at .
  • Page 34 • Ensure that you use the correct screw. It is recommended to use new screws for replacements. If you have a torque screwdriver, tighten all screws firmly to the torque specified in the screw information table for each step. • Ensure that torque screwdrivers are calibrated correctly following country specifications. Lenovo E41-55 Hardware Maintenance Manual...

  • Page 35: Chapter 5. Identifying Frus (Crus)

    Chapter 5. Identifying FRUs (CRUs) Major FRUs and CRUs The exploded illustrations help Lenovo service technicians identify FRUs or CRUs that they may need to replace when servicing a customer’s computer. Figure 1. Lenovo E41-55 exploded view Table 1. FRU (CRU) categories...
  • Page 36 CMOS battery Wireless LAN card M.2 2280 solid state drive* M.2 2242 solid state drive* SSD bracket Speakers Power cord ac power adapter Miscellaneous parts kits Lenovo factory recovery USB key* * for selected models Lenovo E41-55 Hardware Maintenance Manual...
  • Page 37 Figure 2. LCD module — exploded view Table 2. FRU categories for the LCD module FRU (CRU) description Self-service CRU Optional-service CRU LCD bezel LCD panel LCD cable Microphone rubber Camera board LCD rear cover assembly Hinge assembly LCD elastic adhesive tapes Chapter 5 Identifying FRUs (CRUs)
  • Page 38 Lenovo E41-55 Hardware Maintenance Manual...

  • Page 39: Chapter 6. Removing A Fru Or Cru

    5. To install a new FRU in place, perform the removal procedure in reverse and follow any notes that pertain to replacement. 6. When replacing a FRU, carefully retain and reuse all screws. If screws are missing, look up the Lenovo parts numbers by visiting https://support.lenovo.com/partslookup...

  • Page 40: Remove The Hard Disk Drive And Hard Disk Drive Bracket

    Screw specifications Number of screws M2.0 x 3 Step 2. Remove the hard disk drive with disk drive bracket. Step 3. Remove 4 screws that secure the hard disk drive to the hard disk drive bracket. Lenovo E41-55 Hardware Maintenance Manual...

  • Page 41: Remove The Memory Module Bracket And Memory Dimm

    Figure 5. Remove 4 screws and remove hard disk drive bracket Step 4. Remove the hard disk drive. Remove the memory module bracket and memory DIMM Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 33 Step 1.

  • Page 42: Remove The M.2 2280 Solid-State Drive (For Selected Models)

    Remove the M.2 solid-state drive by pulling it away from the slot. Remove the M.2 2242 solid-state drive (for selected models) Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 33 Step 1. Remove 1 screw. Lenovo E41-55 Hardware Maintenance Manual...

  • Page 43: Remove The Heat Sink

    Figure 8. Remove 1 screw and remove the M.2 2242 solid-state drive Screw specifications Number of screws M2.0 x 2 Step 2. Pull the M.2 solid-state drive with bracket away from the slot. Step 3. Remove the screw that secures the M.2 2242 solid-state drive to the solid-state drive bracket. Step 4.

  • Page 44: Remove The Thermal Fan

    Remove 2 screws. Step 3. Remove the thermal fan. Remove the CMOS battery Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 33 Step 1. Pry up the CMOS battery. Lenovo E41-55 Hardware Maintenance Manual...

  • Page 45: Remove The Built In Battery

    Figure 11. Pry up the CMOS battery Step 2. Remove the RTC battery. Remove the built in battery Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 33 Step 1. Detach the battery connector. Figure 12.

  • Page 46: Remove The Fingerprint Reader Cable, Fingerprint Reader And Fingerprint Reader Bracket

    Detach fingerprint reader cable. Figure 13. Detach fingerprint reader cable and remove fingerprint reader Step 2. Detach the fingerprint reader cable from fingerprint reader. Step 3. Remove 1 screw. Step 4. Remove fingerprint reader bracket. Lenovo E41-55 Hardware Maintenance Manual...

  • Page 47: Remove The Wireless Lan Card

    Screw specifications Number of screws M2.0 x 2 Step 5. Remove fingerprint reader. Remove the Wireless LAN card Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 33 Step 1. Remove the WLAN mylar. Figure 14.

  • Page 48: Remove The Speakers

    Remove the DC-in cable Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 33 Step 1. Remove 3 screws. Figure 16. Remove 3 screws and lift up the hinge Lenovo E41-55 Hardware Maintenance Manual...

  • Page 49: Remove The Lcd Unit

    Screw specifications Number of screws M2.5 x 5.5 Step 2. Lift up the hinge. Step 3. Unplug the DC-in cable. Figure 17. Unplug the DC-in cable and remove the DC-in cable Step 4. Remove the DC-in cable. Remove the LCD unit Make sure the following FRUs (CRUs) have been removed.
  • Page 50 M2.5 x 5.5 Figure 18. Remove 6 screws Step 2. Detach Wireless WAN cables. Step 3. Detach LCD cable. Step 4. Remove the cables. Figure 19. Remove the cables Step 5. Pivot the LCD unit downward. Lenovo E41-55 Hardware Maintenance Manual...

  • Page 51: Remove The System Board

    Figure 20. Pivot the LCD unit downward Step 6. Remove the LCD unit. Figure 21. Remove LCD unit Remove the system board Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 33 “Remove the hard disk drive and hard disk drive bracket” on page 34 “Remove the memory module bracket and memory DIMM”...
  • Page 52 Note: A Mylar film might cover the keyboard connector and you need to open it first before accessing to keyboard connector. When you install the system board, remember to attach the mylar on the keyboard connector for better protection of the keyboard. Step 4. Remove 3 screws. Lenovo E41-55 Hardware Maintenance Manual...

  • Page 53: Remove The Upper Case (With Keyboard And Touch Pad)

    Screw specifications Number of screws M2.0 x 3 Figure 24. Remove 3 screws Step 5. Carefully remove the system board. Remove the upper case (with keyboard and touch pad) Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 33 “Remove the hard disk drive and hard disk drive bracket”...

  • Page 54: Disassemble The Lcd Module

    “Remove the LCD bezel” on page 48 Step 1. Grasp the end of two elastic adhesive tapes with tweezers. Pull out each tape slowly in the direction as shown until two elastic tapes are all released from LCD unit. Lenovo E41-55 Hardware Maintenance Manual...

  • Page 55: Remove The Lcd Panel

    Figure 26. Pull the elastic tapes of LCD bezel Step 2. Turn over the LCD panel. Figure 27. Turn over the LCD panel Step 3. Peel off the sticker. Step 4. Detach the LCD cable connector. Step 5. Remove the LCD panel. Chapter 6 Removing a FRU or CRU...

  • Page 56: Remove The Hinges And Lcd Cable

    “Remove the LCD unit” on page 43 “Remove the LCD bezel” on page 48 “Remove the LCD panel” on page 48 Step 1. Remove LCD cable and Wireless LAN cable. Figure 28. Remove cables Step 2. Remove 8 screws. Lenovo E41-55 Hardware Maintenance Manual...

  • Page 57: Remove The Camera Cable

    Number of screws Screw specifications M2.5 x 2.5 Figure 29. Remove 8 screws Step 3. Remove the hinges. Remove the camera cable Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 33 “Remove the built in battery” on page 39 “Remove the LCD unit”...

  • Page 58: Remove The Camera Board

    “Remove the LCD panel” on page 48 “Remove the camera cable” on page 51 Step 1. Peel off the sticker that secures the camera cable. Step 2. Detach the connector. Step 3. Remove the camera board. Lenovo E41-55 Hardware Maintenance Manual...

  • Page 59: Remove The Lcd Cover

    Figure 31. Remove the camera board Remove the LCD cover Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 33 “Remove the built in battery” on page 39 “Remove the LCD unit” on page 43 “Remove the LCD bezel”...
  • Page 60 Lenovo E41-55 Hardware Maintenance Manual...

  • Page 61: Trademarks

    Trademarks LENOVO, LENOVO logo, THINKPAD and THINKPAD logo are trademarks of Lenovo. Windows is trademark of the Microsoft group of companies. The terms HDMI and HDMI High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC in the United States and other countries. USB-C is a registered trademark of USB Implementers Forum.

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